mega-manual, dev-manual: Updated the recipe flow figure.

(From yocto-docs rev: 746eacaf4256c2b28182ca69f4d393025f854a68)

Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>